Log message:
finance/py-alpha_vantage: Update to 2.0.0

Notable changes since 1.8.0:

* From version 1.9.0 onwards, the urllib was substituted by pythons
  request library that is thread safe. If you have any error, post an
  issue.

Log message:
finance/py-alpha_vantage: Import version 1.8.0

Alpha Vantage delivers a free API for real time financial data and
most used finance indicators in a simple json or pandas format. This
module implements a python interface to the free API provided by Alpha
Vantage (http://www.alphavantage.co/). It requires a free API key,
which can be requested on http://www.alphavantage.co/support/#api-key.